The Korean rhinoceros beetle, Allomyrina dichotoma (Coleoptera: Scarabaeidae), has been traditionally used for the treatment of liverrelated diseases. Recently A. dichotoma was registered as a food ingredient in Korea. Given the increasing interest in this beetle, studies on the development of safe and nutritious feed sources for its commercial production are needed. In this study, we compared the effects of by-products on the growth of third instar larvae of A. dichotoma. An abundance of food by-products have been found to serve as an alternative energy source in animal feeds with the reduced cost. We fed third instar A. dichotoma larvae feeds consisting of fermented sawdust with nine different combinations of citrus peel, soybean curd cake, soybean oil meal, and brewers’ dried grain, and measured their effects on growth until the larvae pupated. The highest survival rate was in feed supplemented with 10% of brewers’ dried grain (66.7%). Especially, larvae fed on 10% of brewers’ dried grain were 26% heavier than the control (with no supplement). For the group of 10% brewers’ dried grain, the larval period of third instar was shortened by almost 28 days compared to the control group. Of the experimental and control groups, only the group of 10% brewers’ dried grain showed more than 90% of pupation rate. Therefore, brewers’ dried grain may be sufficiently useful as a source of feed for A. dichotoma.

The combination ratio of oyster mushroom cultivation supplements have used poplar sawdust(PS) 50% : beet pulp(BP) 30% : cotton seed(CS) 20%. we substituted cotton seed and beet pulp for dry wastes(DW) 10, 20. 30% respectively. In case of mixing DW 10% except from CS, mycelial growth was inhibited a little, but mycelial density was accelerated a little. The more DW contents increase, the more mycelial growth was inhibited, but mycelial growth was accelerated a little, respectively. In case of mixing DW except from CS, mycelial growth was inhibited a little bit. In case of mixing DW except from CS and BP, mycelial growth was inhibited remarkably. CHUNCHU variety developed resistance to DW than SUHAN variety.

수열탄화 기술은 고온에서 반응이 발생하는 열분해 탄화기술의 단점을 보완하기 위한 방법으로 일정 온도조건(150~200oC)와 고압(10~20 kg/cm²)의 증기를 이용해 슬러지 내 미생물의 세포벽을 파괴함으로서 탈수성을 향상시키고 고액분리를 통해 액체생성물의 가용화 효율을 높이는 기술이다. 본 연구에서는 하수슬러지와 음식물폐기물을 혼합하여 수열탄화반응을 통해 생성된 고체생성물을 이용하여 최종적인 에너지원으로 사용하기 위한 건조실험을 진행하였다. 건조기는 0.9m²의 Lab 테스트용 디스크건조기를 사용하였고, 건조단계에서 많은 에너지가 소비되는 특성에 맞는 최적의 건조조건을 찾고자 하였다. 실험에 투입된 수열탄화물(함수율 57%)은 먼저 전처리(파쇄) 유무에 따라 각각 나누었으며, 건조열원은 스팀압력(1.2~3.7 kg/cm²G)로 초기온도에 따라 설정하였고 수열탄화물 투입량은 3.8~4.7 kg/batch, 디스크 회전속도는 약 15~19 rpm, 체류시간은 함수율 10wt%가 되었을 때까지 실험을 진행하였다. 본 실험을 통해 수열탄화물의 건조특성 곡선을 통해 건조효율을 종합적으로 평가하고, 최적의 설계인자를 확보하고자 하였다.

After reviewing the storability of harvested persimmon fruits by using food-waste compost, it was hard to find an improvement of storability in room temperature, but the hardness of the fruit remained quite long when treated by foodwasted compost and stored in low temperature. So, it is decided that the use of food-waste compost doesn't influence the fruit's storability in room temperature, but it can influence persimmon fruits' physical properties and component significantly in low temperature. The result was shown that there was no differences on composition of persimmon fruits by food-waste compost and maintaining hardness at room temperature, but at low temperature, the composition of persimmon fruits was changed.